mysql5.1升级5.5操作步骤

参数的更改：

#skip-locking 在5.5里已经不识别了，改成

skip-external-locking

#log-long-format 在5.5里已经不识别了，改成

log-short-format

#log_slow_queries 在5.5里已经不识别了，改成

slow-query-log

#default-character-set = utf8 在5.5里已经不识别了，改成

character-set-server = utf8

basedir = /usr/local/mysql5.5

datadir =/usr/local/mysql5.5/data

innodb_data_home_dir = /usr/local/mysql5.5/data

innodb_log_group_home_dir = /usr/local/mysql5.5/data

user = mysql

#innodb_file_io_threads已经不识别了，改成

innodb_read_io_threads = 8

innodb_write_io_threads = 8

innodb_io_capacity = 2000

innodb_file_format = Barracuda

##增加半同步配置

rpl_semi_sync_master_enabled = 1

rpl_semi_sync_master_timeout = 1000

rpl_semi_sync_slave_enabled = 1

[Warning] --myisam_max_extra_sort_file_size is deprecated and does nothing in this version. It will be removed in a
future release.

第一步：

/usr/local/mysql5.5/bin/mysqld --defaults-file=/etc/my.cnf --skip-grant-tables &

第二步：执行更新程序

[root@vm02 mysql5.5]# bin/mysql_upgrade

Looking for 'mysql' as: bin/mysql

Looking for 'mysqlcheck' as: bin/mysqlcheck

Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/tmp/mysql.sock'

Running 'mysqlcheck' with connection arguments: '--port=3306' '--socket=/tmp/mysql.sock'

mysql.columns_priv OK

mysql.db OK

mysql.event OK

mysql.func OK

mysql.general_log OK

mysql.help_category OK

mysql.help_keyword OK

mysql.help_relation OK

mysql.help_topic OK

mysql.host OK

mysql.ndb_binlog_index OK

mysql.plugin OK

mysql.proc OK

mysql.procs_priv OK

mysql.servers OK

mysql.slow_log OK

mysql.tables_priv OK

mysql.time_zone OK

mysql.time_zone_leap_second OK

mysql.time_zone_name OK

mysql.time_zone_transition OK

mysql.time_zone_transition_type OK

mysql.user OK

test.heartbeat OK

test.log20111127 OK

test.log20111128 OK

test.log20111129 OK

test.log20111130 OK

test.log20111201 OK

test.log20111202 OK

test.log20111203 OK

test.log20111204 OK

test.log20111205 OK

test.log20111206 OK

test.log20111207 OK

test.t1 OK

test.t2 OK

Running 'mysql_fix_privilege_tables'...

OK

第三步：

/usr/local/mysql5.5/bin/mysqladmin -uroot -p123456 shutdown

第四步：

/usr/local/mysql5.5/bin/mysqld_safe --defaults-file=/etc/my.cnf --user=mysql &

mysql> select version();

+------------+

| version() |

+------------+

| 5.5.19-log |

+------------+

1 row in set (0.00 sec)

mysql> select @@innodb_version;

+------------------+

| @@innodb_version |

+------------------+

| 1.1.8 |

+------------------+

1 row in set (0.00 sec)

mysql> install plugin rpl_semi_sync_master soname 'semisync_master.so';

mysql> SET GLOBAL rpl_semi_sync_master_enabled=ON;

mysql> install plugin rpl_semi_sync_slave soname 'semisync_slave.so';

mysql> SET GLOBAL rpl_semi_sync_slave_enabled =ON;

第一次执行完后，就无需再执行了。

至此，升级过程完毕。